Mensurationhard · Past Paper
A square-based pyramid has a base area of 144 cm² and vertical height of 8 cm. Find its slant height.
A10 cm
B12 cm
C14 cm
D17 cm
✓ Correct Answer: A — 10 cm
Side of base a = sqrt(144) = 12 cm. Half side = 6 cm. l = sqrt(h² + (a/2)²) = sqrt(8² + 6²) = sqrt(64+36) = 10 cm.
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